<template>
  <div>
    <div class="search">
      <input class="search-input" v-model="keyword" type="text" placeholder="输入城市或拼音" name="" id="">
    </div>
    <div ref="search" class="search-content" v-show="keyword">
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'

export default {
  name: 'CitySearch',
  props:{
    cities: Object
  },
  data(){
    return {
      keyword:'',
      list: [],
      timer:null
    }
  },
  computed: {
    hasNoData(){
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if(this.timer){
        clearTimeout(this.timer)
      }
      if(!this.keyword){
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
          const result = []
          for (let i in this.cities) {
            this.cities[i].forEach(value => {
              if (value.spell.indexOf(this.keyword) > -1 ||
                  value.name.indexOf(this.keyword) > -1) {
                result.push(value)
              }
            });
          }
          this.list = result
      }, 100);
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs['search'])
  },
  methods: {
    handleCityClick(city){
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.search {
  height: 0.72rem;
  padding: 0 0.1rem;
  background: $bgColor;

  .search-input {
    box-sizing: border-box;
    width: 100%;
    height: 0.62rem;
    padding: 0 0.1rem;
    line-height: 0.62rem;
    text-align: center;
    border-radius: 0.06rem;
    color: #666;
  }
}

.search-content {
  z-index: 1;
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: #eee;

  .search-item {
    line-height: 0.62rem;
    padding-left: 0.2rem;
    color: #666;
    background: #fff;
  }
}
</style>
